UIView扩展添加点击事件

UIView扩展添加点击事件

在app开发过程中，面对炫酷的界面设计，不仅图片文字能点击就连空白区域也要能点击，面对这种场景解决方案当然是添加各种手势、或者在上面再添加一层button／control之类的，每个控件都要这样写一遍太烦了，，，下面通过UIView类的扩展用两种方式，一句话为空间添加可点击事件。

UIView类扩展，添加Block／target-action 事件回调

• 添加 Block 事件：

  - (void)addActionWithblock:(TouchCallBackBlock)block;
  
  

• 添加 Target-Action 事件：

  - (void)addTarget:(id)target action:(SEL)action;
  

• 使用例子：

   - (void)viewDidLoad {
      [super viewDidLoad];
      // Do any additional setup after loading the view, typically from a nib.
      
      self.view.backgroundColor = [UIColor whiteColor];
      
      // UIView 添加 Block 事件：
      UIView *view = [[UIView alloc] initWithFrame:CGRectMake(50, 100, 100, 100)];    
      view.backgroundColor = [UIColor blueColor];
      [self.view addSubview:view];
      [view addActionWithblock:^{
          NSLog(@"view 被点击 ......\n");
      }];
      
      //UILabel  添加 Block 事件：         
      UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(180, 100, 100, 100)];
      label.backgroundColor = [UIColor redColor];
      [self.view addSubview:label];
      [label addActionWithblock:^{
          NSLog(@"label 被点击 ......\n");
      }];
      
      // UIImageView  添加 Block 事件：
      UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(50, 250, 100, 100)];
      imageView.backgroundColor = [UIColor purpleColor];
      [self.view addSubview:imageView];
      [imageView addActionWithblock:^{
          NSLog(@"imageView 被点击 ......\n");
      }];
      
      // UIImageView  添加 Target-Action 事件：
      UIImageView *imageView2 = [[UIImageView alloc] initWithFrame:CGRectMake(180, 250, 100, 100)];
      imageView2.backgroundColor = [UIColor brownColor];
      [self.view addSubview:imageView2];
      [imageView2 addTarget:self action:@selector(imageDidSelcte:)];
  }
  
  - (void)imageDidSelcte:(id)sender
  {
      NSLog(@" targetAction label 被点击 ......\n");
  }